Hmmm...interesting point, and I think I know what you mean. When
you play a Castagnari Lilly or Bebe or Lilliput, you think 'this
sounds kind of like a concertina' but then it's only 'kind of.'

I think the accordion reeds have a bit more of a sawtooth sound
to them...not a pathological buzz, but more off in the direction
of an oboe reed. A concertina has a bit more of a tuning-fork
like purity.

That said, I don't recall that in the Morse boxes I've picked
up, but then I didn't really think about it. I'll have to have
another listen. It's been a couple of years.


What I do recall is remarkable light weight, and something
about the shape/throw of the buttons which felt kind of
different but which could be gotten used to.